Erich Stephens, chief development officer at Vineyard Wind, said the partnership ensures their project will be built and operated responsibly.

"This agreement is also a model for how all stakeholders, including us as the project proponent, can work together to get the large amounts of offshore wind that we as a nation need to fight climate change,” Stephens said.

Vineyard Wind’s project is expected to be completed in 2022, and produce enough energy to power more than 400 thousand homes.